Modality-specific communication enabling gait synchronization during over-ground side-by-side walking
Modality-specific communication enabling gait synchronization during over-ground side-by-side walking
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DOI：
10.1016/j.humov.2012.01.003
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发表时间：
2012-10-01
影响因子：
2.1
通讯作者：
Hausdorff, Jeffrey M.
中科院分区：
文献类型：
--
作者：
Zivotofsky, Ari Z.;Gruendlinger, Leon;Hausdorff, Jeffrey M.
细心的观察者会注意到，街道上两个步行者之间的步态无意同步似乎经常发生。尽管如此，这种步态锁相的发生率和运动感觉机制直到最近才开始研究。以前的研究要么是定性的，要么是在非自然条件下进行的，例如在跑步机上行走。本研究定量研究了当两个人沿着一条笔直的地面路径并排行走时，有助于步态同步的潜在感觉机制。十四对受试者在五种操纵可用感官反馈的条件下步行了 70 m。研究的方式是视觉、听觉和触觉。使用安装在躯干上的三轴加速度计对运动进行量化。计算步态同步指数（GSI）来量化步态节律的相位同步。总体而言，36% 的步行表现出同步性。触觉和听觉反馈显示出最大的同步能力，而视觉反馈的效果最差。结果表明，自然行走期间的步态同步是常见的、可量化的，并且具有特定于模态的属性。 (C) 2012 Elsevier B.V. 保留所有权利。
An attentive observer will notice that unintentional synchronization of gait between two walkers on the street seems to occur frequently. Nonetheless, the rate of occurrence and motor-sensory mechanisms underlying this phase-locking of gait have only recently begun to be investigated. Previous studies have either been qualitative or carried out under non-natural conditions, e.g., treadmill walking. The present study quantitatively examined the potential sensory mechanisms that contribute to the gait synchronization that occurs when two people walk side by side along a straight, over-ground, pathway. Fourteen pairs of subjects walked 70 m under five conditions that manipulated the available sensory feedback. The modalities studied were visual, auditory, and tactile. Movement was quantified using a trunk-mounted tri-axial accelerometer. A gait synchronization index (GSI) was calculated to quantify the phase synchronization of the gait rhythms. Overall, 36% of the walks exhibited synchrony. Tactile and auditory feedback showed the greatest ability to synchronize, while visual feedback was the least effective. The results show that gait synchronization during natural walking is common, quantifiable, and has modality-specific properties. (C) 2012 Elsevier B.V. All rights reserved.